<?php

var_dump(123);
var_dump(123.456);
var_dump(" Hello world ");
var_dump(false);

$a = 123;
echo gettype($a), "\n";
$a = 123.456;
echo gettype($a), "\n";
$a = "Hello World";
echo gettype($a), "\n";
$a = false;
echo gettype($a), "\n";

if('integer' == gettype(123)) {
  echo "\n\n:)\n\n";
}

